EntityFramework migration tool and library that supports migrating multiple models

For details of how to use it see: http://codingmonster.co.uk/blog/1395/entity-framework-multi-migration

Out of the box, Entityframework supports multiple models being persisted to the same database. However...

Multiple models cannot easily be integrated and treated by the consuming application as if it were a single model.

This project provides the necessary tooling to support developing a model class library with it's own set of migrations that are then merged with the migrations of a consuming class library.

• MultiMigrate.exe - a replacement to the Migrate.exe tool
• CcAcca.EntityFramework.MultiMigrate.dll provides the class MultiMigrateDbToLastestVersion as a replacement to the database initializer MigrateDatabaseToLatestVersion

Its usually desirable to develop highly decoupled models with an application layer that provides the necessary integration to the GUI.

However, there are times when its an advantage to develop a single unified model but to internally identify a kernel that is shared by multiple libraries.

This kernel is developed as a base class library that is inherited and extended by one or more concreate class libraries.

In such scenarios, typically migrations for the base class library end up having to be repeatedily scaffolded by each extending library. For simple libraries this might be ok.

This is not viable as complexity of the base library increases and custom migrations are required and/or migrations include data. Instead migrations should be created for the base class library and these merged into the migrations of the consuming library.